[U-Boot] issue with 'ubi part'

[Stefan Roese]

Andre,

On Friday 04 March 2011 11:16:50 Andre Schwarz wrote:
> >> =>  ubi part root
> >> Creating 1 MTD partitions on "nand0":
> >> 0x000000000000-0x000040000000 : "mtd=0"
> >> UBI: attaching mtd2 to ubi0
> >> UBI error: io_init: unaligned VID header shift 2
> >> UBI error: ubi_init: cannot attach mtd2
> >> UBI error: ubi_init: UBI error: cannot initialize UBI, error -22
> >> UBI init error -22
> >> exit not allowed from main input shell.
> >> =>
> > 
> > Did you erase the flash partition before trying to attach UBI on it?
> 
> yes - the ubi volume has been created by linux and is working fine :
> 
> ubiformat /dev/NAND -y
> ubiattach /dev/ubi_ctrl -m 9
> ubimkvol /dev/ubi0 -N rootfs -m
> mount -t ubifs ubi0:rootfs /mnt/nand
> 
> Actually I'm running Linux with rootfs on this very ubi volume.
>
> All I wanna do is get the kernel + dtb from this volume for stand-alone
> boot.
> Meanwhile I'm getting both files using tftp from the server - but that's
> no long term solution.

I have no real idea then why this fails in U-Boot, sorry. What versions of U-
Boot and Linux are you using?

I suggest you debug a bit, to see where this error results from.
 
> I'm still curious why we get
> 
> 0x000000000000-0x000040000000 : "mtd=0"   ->  0 !
> and
> UBI error: ubi_init: cannot attach mtd2    ->  2 !
> 
> 
> Is this the expected behaviour ?

IIRC, it's because the NOR flash partitions are enumerated first. So 2 NOR 
partitions (0...1) makes the first NAND partition #2.

Cheers,
Stefan

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